MY154954A - Content playback device - Google Patents

Content playback device

Info

Publication number
MY154954A
MY154954A MYPI20050939A MYPI20050939A MY154954A MY 154954 A MY154954 A MY 154954A MY PI20050939 A MYPI20050939 A MY PI20050939A MY PI20050939 A MYPI20050939 A MY PI20050939A MY 154954 A MY154954 A MY 154954A
Authority
MY
Malaysia
Prior art keywords
key
content
control unit
playback device
generation information
Prior art date
Application number
MYPI20050939A
Inventor
Masaya Yamamoto
Toshihisa Nakano
Motoji Ohmori
Masayuki Kozuka
Original Assignee
Panasonic Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US10/796,972 external-priority patent/US7715558B2/en
Application filed by Panasonic Corp filed Critical Panasonic Corp
Publication of MY154954A publication Critical patent/MY154954A/en

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0021Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00166Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised contents recorded on or reproduced from a record carrier, e.g. music or software
    • G11B20/00181Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised contents recorded on or reproduced from a record carrier, e.g. music or software using a content identifier, e.g. an international standard recording code [ISRC] or a digital object identifier [DOI]
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00188Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised devices recording or reproducing contents to/from a record carrier
    • G11B20/00195Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised devices recording or reproducing contents to/from a record carrier using a device identifier associated with the player or recorder, e.g. serial numbers of playback apparatuses or MAC addresses
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0021Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
    • G11B20/00217Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
    • G11B20/00224Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is obtained from a remote server
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0021Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
    • G11B20/00217Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
    • G11B20/00253Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0021Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
    • G11B20/00217Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
    • G11B20/00253Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
    • G11B20/00347Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier wherein the medium identifier is used as a key
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0021Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
    • G11B20/00485Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier
    • G11B20/00492Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Power Engineering (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Storage Device Security (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)

Abstract

TO PROVIDE A CONTENT PLAYBACK DEVICE (100) CAPABLE OF PROTECTING CONTENT ACCORDING TO DRM, WHEN DECRYPTING ENCRYPTED CONTENT RECORDED ON A RECORDING MEDIUM (200) AND PLAYING THE DECRYPTED CONTENT. IF KEY GENERATION INFORMATION IS ?00?, A KEY CONTROL UNIT (104) CONCATENATES A DECRYPTED MEDIA KEY AND CONTENT INFORMATION IN THIS ORDER, AND APPLIES A ONE-WAY FUNCTION TO THE CONCATENATION RESULT TO GENERATE A CONTENT KEY. IF THE KEY GENERATION INFORMATION IS ?10?, THE KEY CONTROL UNIT (104) SETS A RIGHTS KEY AS THE CONTENT KEY. IF THE KEY GENERATION INFORMATION IS ?01?, THE KEY CONTROL UNIT (104) CONCATENATES THE DECRYPTED MEDIA KEY AND THE RIGHTS KEY IN THIS ORDER, AND APPLIES A ONE-WAY FUNCTION TO THE CONCATENATION RESULT TO GENERATE THE CONTENT KEY.
MYPI20050939A 2004-03-09 2005-03-08 Content playback device MY154954A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004066182 2004-03-09
US10/796,972 US7715558B2 (en) 2004-03-11 2004-03-11 Encrypted-content recording medium, playback apparatus, and playback method

Publications (1)

Publication Number Publication Date
MY154954A true MY154954A (en) 2015-08-28

Family

ID=34921744

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI20050939A MY154954A (en) 2004-03-09 2005-03-08 Content playback device

Country Status (7)

Country Link
US (2) US7933409B2 (en)
EP (2) EP3154058B1 (en)
JP (1) JP4778897B2 (en)
CN (1) CN1930625B (en)
MY (1) MY154954A (en)
TW (1) TWI379573B (en)
WO (1) WO2005086160A2 (en)

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US7831516B2 (en) * 1992-12-15 2010-11-09 Sl Patent Holdings Llc System and method for redistributing and licensing access to protected information among a plurality of devices
US8359332B1 (en) 2004-08-02 2013-01-22 Nvidia Corporation Secure content enabled drive digital rights management system and method
US8402283B1 (en) 2004-08-02 2013-03-19 Nvidia Corporation Secure content enabled drive system and method
CN100535919C (en) 2004-08-20 2009-09-02 松下电器产业株式会社 Content reproducing device and content reproducing method
TWI277870B (en) * 2004-11-22 2007-04-01 Toshiba Corp Copyright management method, information recording/reproducing method and device, and information recording medium and method of manufacturing the medium
US8751825B1 (en) * 2004-12-15 2014-06-10 Nvidia Corporation Content server and method of storing content
US8788425B1 (en) 2004-12-15 2014-07-22 Nvidia Corporation Method and system for accessing content on demand
US8346807B1 (en) 2004-12-15 2013-01-01 Nvidia Corporation Method and system for registering and activating content
US8875309B1 (en) 2004-12-15 2014-10-28 Nvidia Corporation Content server and method of providing content therefrom
US8893299B1 (en) 2005-04-22 2014-11-18 Nvidia Corporation Content keys for authorizing access to content
EP1969519A2 (en) * 2005-12-26 2008-09-17 Koninklijke Philips Electronics N.V. Method and device for rights management
CN101529462A (en) * 2006-07-25 2009-09-09 索尼电子有限公司 Method and system for providing a content subscription service
CN101022028B (en) * 2007-01-12 2010-08-18 炬力集成电路设计有限公司 Quick forward or quick backward method for digital copyright management multimedia player
JP5110942B2 (en) * 2007-04-06 2012-12-26 株式会社日立製作所 Information protection system
KR101394149B1 (en) * 2007-09-06 2014-05-26 삼성전자주식회사 Method and apparatus for protecting content consumer's privacy
WO2010098640A2 (en) * 2009-02-26 2010-09-02 엔에이치엔비지니스플랫폼 주식회사 User control based advertising system and method thereof
KR101824544B1 (en) * 2010-12-06 2018-02-02 삼성전자주식회사 Apparatus and method for trading digital contents in digital contents management system
US8954722B2 (en) * 2011-03-04 2015-02-10 Broadcom Corporation Enforcing software updates in an electronic device
US9118966B2 (en) * 2011-03-04 2015-08-25 Broadcom Corporation Enforcing software independent content protection in an electronic device during transcoding
US9197407B2 (en) 2011-07-19 2015-11-24 Cyberlink Corp. Method and system for providing secret-less application framework
JP5915046B2 (en) * 2011-09-15 2016-05-11 ソニー株式会社 Information processing apparatus, information processing method, and program
US8782440B2 (en) * 2012-08-15 2014-07-15 International Business Machines Corporation Extending the number of applications for accessing protected content in a media using media key blocks
JP7412445B2 (en) * 2019-12-11 2024-01-12 藤原 大介 Content duplication device, access control device and access control program

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Also Published As

Publication number Publication date
US20110110517A1 (en) 2011-05-12
US7933409B2 (en) 2011-04-26
US8116452B2 (en) 2012-02-14
JP2007528570A (en) 2007-10-11
WO2005086160A2 (en) 2005-09-15
WO2005086160A3 (en) 2006-01-26
TWI379573B (en) 2012-12-11
EP3154058B1 (en) 2019-08-07
TW200541288A (en) 2005-12-16
EP3154058A1 (en) 2017-04-12
CN1930625A (en) 2007-03-14
EP1723649A2 (en) 2006-11-22
CN1930625B (en) 2010-05-12
US20070198424A1 (en) 2007-08-23
JP4778897B2 (en) 2011-09-21

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